-hutohins



(No Model.) 2 Sheets-Sheet 1. G. IE.-HUTOHINS.

ATTACHMENT FOR LOOMS FOR WE NG FABRICS CONTAINING WAVY STRIP aw.

No. 357,711. Patented Feb. 15, 1887 WWW W fi i gzuy (No Model.) 2 Sheets-Sheet 2. G. F. HUTOHINS.

ATTACHMENT FOR LOOMS FOR WEAVING FABRICS CONTAINING WAVY STRIPES, &:c.

No. 357,711. Patented Feb. 15, 1887.

J Mai Ma lUiviTEn STATES PATENT OFFICE.

GEORGE F. HUTGHINS, OF \VOROESTER, MASSACHUSETTS, ASSIGNOR TO THE KNOWLES LOOM \VORKS, OF SAME PLACE.

ATTACHMENT FOR LOOMS FOR WEAVING FABRICS CONTAINING WAVY STRIPES, 8L0.

SPEQIPICATION forming part of Letters Patent No. 357,711, dated February 15, 1887.

Application filed January 15, 1886. Serial No. 189,624.

To @ZZ whom it may concern:

Be it known that I, GEORGE F. HUTCHINS, a citizen of the United States, residing at Vorcester, in the county of Vorcester and State of Massachusetts, have invented a new and useful Improvement in Mechanisms or Attachments for Looms which \Veave a Fabric Containing Vavy Stripes, Loops, &c. and I do hereby declare thatthe following is a full,clear,and exact description thereof, which, in connection with the drawings making a part of this specification, will enable others skilled in the art to which my invention belongs to make and use the same. I

My invention relates to looms of any wellknown construction and operation 110w in general use, which are either originally designed or are adapted by attached mechanism for weaving a fabric containing wavy stripes, such as imitation seersucker goods, or loops, as in turkish toweling, or other similar goods, the wavy stripes and loops being produced by having the warp-yarn divided between two beams, and by causing one of these beams, as the lay beats up, to let off a greater length of yarn than the other beam, this superfluous length of yarn being beat up so as to produce the wavy stripes, loops, &c.

The object of my invention is to cause a tension on that part of the warp-th reads which produce the wavy stripes, loops, 810., said tension being applied to said warp-threads on their way from the feed-rolls by which they are delivered or let off to the harnesses.

In carrying my invention into effect I employ, in connection with friction feed-rolls and mechanism for imparting positive intermittent movements thereto, a spring actuated rod or roll carried byswingin g arms, the warps for making the wavy stripes in the fabrics passing from said feed-rolls over the said rod on their way to the harness, the said rod being thus adapted to produce the proper tension on the said warps.

As the construction and operation of the class of looms for manufacturing imitation Seersucker goods, &c., upon which my improvement is designed to be used is well known, I have only shown in the drawings a detached section or part of a loom with my improvement applied thereto, which will be sufii (No model.)

eient for a proper and full understanding by those skilled in the art of the nature of my invention.

Referring to the drawings, Figure 1 is a sectional view of a detached section or part of a loom, showing the two warp-beams, the friction feed-rolls, and the swinging tension-rod combined therewith. Fig. 2 is a top or plan view of the friction feed-rolls and the swing- 6) ing tension-rod, looking in the direction of the arrow, Fig. 1. Fig. 3 is a side elevation of the portion of the loom shown in Fig. 1, showing the mechanism for operating the friction feed rolls, as will be hereinafter described.

In the accompanying drawings the part marked A is a part of the side frame of a loom.

B is the breastbeam.

O O are stands at the rear of the loom for Supporting the upper warp-beam, D, and the friction feed-rolls L L. Said friction feedrolls L L have a positive motion for drawing off the warp o from the beam D, which forms the wavy stripes in the fabric, and are operated intermittently by means of any usual and well-known form of let-ofi' mechanism employed in looms to feed forward intermittently the warp to the harnesses.

I have shown in Fig. 3 one usual way of operating'the feed-rolls L L 5 but any equivalent way may be employed in lieu of that shown, if preferred. Acrank-disk, a, issecured upon the driving-shaft, to which is adjustably secured, in any usual and well-known manner, one end of the pawl 12, the throw of said pawl being regulated by adjusting its position on the disk 0!, in the usual manner. The other end of the pawl b is adapted to engage the teeth of a ratchet-wheel, d, turning on a stud, 6, supported in the stand 0. A small pinion,

f, secured to said ratchet-wheel d and turning on the stud e, meshes with and drives the gear 9, secured upon the end of the shaft of the roll L. A second gear, h, also secured on theshaft of said roll, meshes with and drives the gear *6, secured upon the shaft of the roll L. In this manner the rolls L and L are caused to have a positive but intermittent motion, driven by pawl 12 and the system of gears shown in the drawings and above described.

The roll L has movable bearings n, which are moved toward or from the bearings of the roll L, to increase or diminish the friction on the yarn 'v passingbetween the-rolls L and L, by means of thumb-screws m, in connection with springs 0, as shown in Fig. 2, in the usual and well-known manner.

In the stands 0 G, at the rear of the friction feed-rolls L L, a swinging or spring-actuated back rod, is supported, having arms 9 g, which in this instance are hinged or pivoted on studs 1' 4', attached to the stands 0 G. Springs 8 s, encircling the studs 1- 7' and secured at one end to said studs and at their other ends to the arms 9, (see Fig. 2,) tend to keep the rodpaway from the rolls L L, in the position shown by full lines, Fig. 1. The springs s s may be tightened or loosened, to adjust the tension or spring of the rod 19, by turning in either direction the studs r 1', said studs, after the tension has been adjusted, being held and prevented from turning by-the set-screws t t.

The lower warp-beam, G, is supported in the frame A and operated by any usual and well-known form of let-off mechanism to let off the warp a, which produces the smooth or even stripes in the fabric woven between the wavy stripes, said warp a passing over the stationary roll K to the harnesses, in the usual and well-known manner.

The warp 2; upon the upper beam, D, produces the wavy stripes in the fabric woven.

It is let off faster than the warp u, and after it is drawn off by the friction feed-rolls L L it passes over or around the spring-actuated back rod, p, before passing to the harnesses, the rod 19 serving to hold the warp o, as it is drawn off from the beam D by the friction feed-rolls L L, away from the harnesses until the lay beats up and draws it in, at the same time drawing the rodp into the position shown by dotted lines, Fig. 1.

The value of my invention will be readily appreciated by those-skilled in the art. It will be understood that the warp u from the lower beam, G, is not let off by a positive motion in this instance, but by a friction mechanism, in any usual and well-known manner, so that the warp passes to the harnesses only as fast as it is used, and therefore requires no tension thereon to keep it taut or in its proper position; but the warp '0, which forms the wavy stripes in the fabric woven and which is let off faster than the warp a, is let off by a positive motion-that is, a positive intermittent motion is given to the feed-rolls L L, which feed forward the warp o to the harnesses-and if it were not for the intervention of the spring-actuated back rod, 1), in combination with the rolls L L, to hold back the warp from the harnesses and put a tension thereon until the lay beats up and draws forward the rod 19, (see dotted lines, Fig. 1,) the warp '0 would be so loose between the let-oif mechanism and the cloth-point as to kink or snarl and, when forming the upper part of the shed, to drop down into the shed or path of the shuttle, and it is for the prevention of these occurrences that my improvement is designed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a loom provided with two warpbeams, the combination, with the friction feed-rolls L L and mechanism for imparting positive intermittent movements thereto, of the back rod, 1), the swinging arms 1 g, by which the said rod is carried, the adjustable studs 0' r, and the springs s 8, connected with the said arms and studs, substantially as set forth.

GEORGE F. HUTGHINS.

WVitnesses:

J OHN O. DEWEY, FRED. W. SMITH. 

